1 files changed, 396 insertions, 0 deletions
diff --git a/node_modules/vue/src/server/render.js b/node_modules/vue/src/server/render.js
new file mode 100644
index 00000000..592a6175
--- /dev/null
+++ b/node_modules/vue/src/server/render.js
@@ -0,0 +1,396 @@
+/* @flow */
+
+import { escape } from 'web/server/util'
+import { SSR_ATTR } from 'shared/constants'
+import { RenderContext } from './render-context'
+import { generateComponentTrace } from 'core/util/debug'
+import { ssrCompileToFunctions } from 'web/server/compiler'
+import { installSSRHelpers } from './optimizing-compiler/runtime-helpers'
+
+import { isDef, isUndef, isTrue } from 'shared/util'
+
+import {
+  createComponent,
+  createComponentInstanceForVnode
+} from 'core/vdom/create-component'
+
+let warned = Object.create(null)
+const warnOnce = msg => {
+  if (!warned[msg]) {
+    warned[msg] = true
+    console.warn(`\n\u001b[31m${msg}\u001b[39m\n`)
+  }
+}
+
+const onCompilationError = (err, vm) => {
+  const trace = vm ? generateComponentTrace(vm) : ''
+  throw new Error(`\n\u001b[31m${err}${trace}\u001b[39m\n`)
+}
+
+const normalizeRender = vm => {
+  const { render, template, _scopeId } = vm.$options
+  if (isUndef(render)) {
+    if (template) {
+      const compiled = ssrCompileToFunctions(template, {
+        scopeId: _scopeId,
+        warn: onCompilationError
+      }, vm)
+
+      vm.$options.render = compiled.render
+      vm.$options.staticRenderFns = compiled.staticRenderFns
+    } else {
+      throw new Error(
+        `render function or template not defined in component: ${
+          vm.$options.name || vm.$options._componentTag || 'anonymous'
+        }`
+      )
+    }
+  }
+}
+
+function renderNode (node, isRoot, context) {
+  if (node.isString) {
+    renderStringNode(node, context)
+  } else if (isDef(node.componentOptions)) {
+    renderComponent(node, isRoot, context)
+  } else if (isDef(node.tag)) {
+    renderElement(node, isRoot, context)
+  } else if (isTrue(node.isComment)) {
+    if (isDef(node.asyncFactory)) {
+      // async component
+      renderAsyncComponent(node, isRoot, context)
+    } else {
+      context.write(`<!--${node.text}-->`, context.next)
+    }
+  } else {
+    context.write(
+      node.raw ? node.text : escape(String(node.text)),
+      context.next
+    )
+  }
+}
+
+function registerComponentForCache (options, write) {
+  // exposed by vue-loader, need to call this if cache hit because
+  // component lifecycle hooks will not be called.
+  const register = options._ssrRegister
+  if (write.caching && isDef(register)) {
+    write.componentBuffer[write.componentBuffer.length - 1].add(register)
+  }
+  return register
+}
+
+function renderComponent (node, isRoot, context) {
+  const { write, next, userContext } = context
+
+  // check cache hit
+  const Ctor = node.componentOptions.Ctor
+  const getKey = Ctor.options.serverCacheKey
+  const name = Ctor.options.name
+  const cache = context.cache
+  const registerComponent = registerComponentForCache(Ctor.options, write)
+
+  if (isDef(getKey) && isDef(cache) && isDef(name)) {
+    const key = name + '::' + getKey(node.componentOptions.propsData)
+    const { has, get } = context
+    if (isDef(has)) {
+      has(key, hit => {
+        if (hit === true && isDef(get)) {
+          get(key, res => {
+            if (isDef(registerComponent)) {
+              registerComponent(userContext)
+            }
+            res.components.forEach(register => register(userContext))
+            write(res.html, next)
+          })
+        } else {
+          renderComponentWithCache(node, isRoot, key, context)
+        }
+      })
+    } else if (isDef(get)) {
+      get(key, res => {
+        if (isDef(res)) {
+          if (isDef(registerComponent)) {
+            registerComponent(userContext)
+          }
+          res.components.forEach(register => register(userContext))
+          write(res.html, next)
+        } else {
+          renderComponentWithCache(node, isRoot, key, context)
+        }
+      })
+    }
+  } else {
+    if (isDef(getKey) && isUndef(cache)) {
+      warnOnce(
+        `[vue-server-renderer] Component ${
+          Ctor.options.name || '(anonymous)'
+        } implemented serverCacheKey, ` +
+        'but no cache was provided to the renderer.'
+      )
+    }
+    if (isDef(getKey) && isUndef(name)) {
+      warnOnce(
+        `[vue-server-renderer] Components that implement "serverCacheKey" ` +
+        `must also define a unique "name" option.`
+      )
+    }
+    renderComponentInner(node, isRoot, context)
+  }
+}
+
+function renderComponentWithCache (node, isRoot, key, context) {
+  const write = context.write
+  write.caching = true
+  const buffer = write.cacheBuffer
+  const bufferIndex = buffer.push('') - 1
+  const componentBuffer = write.componentBuffer
+  componentBuffer.push(new Set())
+  context.renderStates.push({
+    type: 'ComponentWithCache',
+    key,
+    buffer,
+    bufferIndex,
+    componentBuffer
+  })
+  renderComponentInner(node, isRoot, context)
+}
+
+function renderComponentInner (node, isRoot, context) {
+  const prevActive = context.activeInstance
+  // expose userContext on vnode
+  node.ssrContext = context.userContext
+  const child = context.activeInstance = createComponentInstanceForVnode(
+    node,
+    context.activeInstance
+  )
+  normalizeRender(child)
+  const childNode = child._render()
+  childNode.parent = node
+  context.renderStates.push({
+    type: 'Component',
+    prevActive
+  })
+  renderNode(childNode, isRoot, context)
+}
+
+function renderAsyncComponent (node, isRoot, context) {
+  const factory = node.asyncFactory
+
+  const resolve = comp => {
+    if (comp.__esModule && comp.default) {
+      comp = comp.default
+    }
+    const { data, children, tag } = node.asyncMeta
+    const nodeContext = node.asyncMeta.context
+    const resolvedNode: any = createComponent(
+      comp,
+      data,
+      nodeContext,
+      children,
+      tag
+    )
+    if (resolvedNode) {
+      if (resolvedNode.componentOptions) {
+        // normal component
+        renderComponent(resolvedNode, isRoot, context)
+      } else if (!Array.isArray(resolvedNode)) {
+        // single return node from functional component
+        renderNode(resolvedNode, isRoot, context)
+      } else {
+        // multiple return nodes from functional component
+        context.renderStates.push({
+          type: 'Fragment',
+          children: resolvedNode,
+          rendered: 0,
+          total: resolvedNode.length
+        })
+        context.next()
+      }
+    } else {
+      // invalid component, but this does not throw on the client
+      // so render empty comment node
+      context.write(`<!---->`, context.next)
+    }
+  }
+
+  if (factory.resolved) {
+    resolve(factory.resolved)
+    return
+  }
+
+  const reject = context.done
+  let res
+  try {
+    res = factory(resolve, reject)
+  } catch (e) {
+    reject(e)
+  }
+  if (res) {
+    if (typeof res.then === 'function') {
+      res.then(resolve, reject).catch(reject)
+    } else {
+      // new syntax in 2.3
+      const comp = res.component
+      if (comp && typeof comp.then === 'function') {
+        comp.then(resolve, reject).catch(reject)
+      }
+    }
+  }
+}
+
+function renderStringNode (el, context) {
+  const { write, next } = context
+  if (isUndef(el.children) || el.children.length === 0) {
+    write(el.open + (el.close || ''), next)
+  } else {
+    const children: Array<VNode> = el.children
+    context.renderStates.push({
+      type: 'Element',
+      children,
+      rendered: 0,
+      total: children.length,
+      endTag: el.close
+    })
+    write(el.open, next)
+  }
+}
+
+function renderElement (el, isRoot, context) {
+  const { write, next } = context
+
+  if (isTrue(isRoot)) {
+    if (!el.data) el.data = {}
+    if (!el.data.attrs) el.data.attrs = {}
+    el.data.attrs[SSR_ATTR] = 'true'
+  }
+
+  if (el.fnOptions) {
+    registerComponentForCache(el.fnOptions, write)
+  }
+
+  const startTag = renderStartingTag(el, context)
+  const endTag = `</${el.tag}>`
+  if (context.isUnaryTag(el.tag)) {
+    write(startTag, next)
+  } else if (isUndef(el.children) || el.children.length === 0) {
+    write(startTag + endTag, next)
+  } else {
+    const children: Array<VNode> = el.children
+    context.renderStates.push({
+      type: 'Element',
+      children,
+      rendered: 0,
+      total: children.length,
+      endTag
+    })
+    write(startTag, next)
+  }
+}
+
+function hasAncestorData (node: VNode) {
+  const parentNode = node.parent
+  return isDef(parentNode) && (isDef(parentNode.data) || hasAncestorData(parentNode))
+}
+
+function getVShowDirectiveInfo (node: VNode): ?VNodeDirective {
+  let dir: VNodeDirective
+  let tmp
+
+  while (isDef(node)) {
+    if (node.data && node.data.directives) {
+      tmp = node.data.directives.find(dir => dir.name === 'show')
+      if (tmp) {
+        dir = tmp
+      }
+    }
+    node = node.parent
+  }
+  return dir
+}
+
+function renderStartingTag (node: VNode, context) {
+  let markup = `<${node.tag}`
+  const { directives, modules } = context
+
+  // construct synthetic data for module processing
+  // because modules like style also produce code by parent VNode data
+  if (isUndef(node.data) && hasAncestorData(node)) {
+    node.data = {}
+  }
+  if (isDef(node.data)) {
+    // check directives
+    const dirs = node.data.directives
+    if (dirs) {
+      for (let i = 0; i < dirs.length; i++) {
+        const name = dirs[i].name
+        const dirRenderer = directives[name]
+        if (dirRenderer && name !== 'show') {
+          // directives mutate the node's data
+          // which then gets rendered by modules
+          dirRenderer(node, dirs[i])
+        }
+      }
+    }
+
+    // v-show directive needs to be merged from parent to child
+    const vshowDirectiveInfo = getVShowDirectiveInfo(node)
+    if (vshowDirectiveInfo) {
+      directives.show(node, vshowDirectiveInfo)
+    }
+
+    // apply other modules
+    for (let i = 0; i < modules.length; i++) {
+      const res = modules[i](node)
+      if (res) {
+        markup += res
+      }
+    }
+  }
+  // attach scoped CSS ID
+  let scopeId
+  const activeInstance = context.activeInstance
+  if (isDef(activeInstance) &&
+    activeInstance !== node.context &&
+    isDef(scopeId = activeInstance.$options._scopeId)
+  ) {
+    markup += ` ${(scopeId: any)}`
+  }
+  if (isDef(node.fnScopeId)) {
+    markup += ` ${node.fnScopeId}`
+  } else {
+    while (isDef(node)) {
+      if (isDef(scopeId = node.context.$options._scopeId)) {
+        markup += ` ${scopeId}`
+      }
+      node = node.parent
+    }
+  }
+  return markup + '>'
+}
+
+export function createRenderFunction (
+  modules: Array<(node: VNode) => ?string>,
+  directives: Object,
+  isUnaryTag: Function,
+  cache: any
+) {
+  return function render (
+    component: Component,
+    write: (text: string, next: Function) => void,
+    userContext: ?Object,
+    done: Function
+  ) {
+    warned = Object.create(null)
+    const context = new RenderContext({
+      activeInstance: component,
+      userContext,
+      write, done, renderNode,
+      isUnaryTag, modules, directives,
+      cache
+    })
+    installSSRHelpers(component)
+    normalizeRender(component)
+    renderNode(component._render(), true, context)
+  }
+}